Malicious PDF — malware analysis report

Static analysis result for SHA-256 d53030d5e9c6f94e…

MALICIOUS

PDF

46.4 KB Created: 2021-06-03 07:32:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 76af5cebcf831e314ab620c7e21d06e7 SHA-1: c23c12ba4706704aa0730463eaaa3186a33057ce SHA-256: d53030d5e9c6f94ed0fc5bfdad6eb629011c78008514922afb845a4910d1aa4a
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/406889139/coin-master-rare-cards-hack-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/pokemon-go-free-joystick-hack_GM1094591345.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/woman-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005219.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5219 24228 bytes
SHA-256: 8edb2ad8514005a55da97378a56a6696c4397f8802ae489025cc94a4d9c00be9
font_01_sfnt_off000089ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89ED 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off000093a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A0 17888 bytes
SHA-256: 3bcd7f88e9aff6a3f00dfa05e6d37dfcb1a17a5992fabfc54377b1f82d15f42c

Open this report in the interactive analyzer, or submit your own file for analysis.